An Tso Sun, a Taiwanese exchange student charged with making terroristic threats, in a photo provided by the police department in Upper Darby, Pennsylvania. Sun was arrested after police said he threatened a shooting at his school, Monsignor Bonner and Archbishop Prendergast Catholic High School. Sun is in custody in Delaware County Prison in lieu of US$100,000 bail. Photo: Upper Darby Police Department via AP

Taiwanese exchange student arrested in US ‘after threatening to shoot up his high school’

An Tso Sun, a Taiwanese exchange student charged with making terroristic threats, in a photo provided by the police department in Upper Darby, Pennsylvania. Sun was arrested after police said he threatened a shooting at his school, Monsignor Bonner and Archbishop Prendergast Catholic High School. Sun is in custody in Delaware County Prison in lieu of US$100,000 bail. Photo: Upper Darby Police Department via AP